Formal:
* "Congratulations on your graduation! Your hard work and dedication have paid off. I wish you all the best in your future endeavors."
* "I was so thrilled to hear about your graduation. That's a remarkable achievement, and I'm very impressed."
* "Congratulations on this significant milestone! What are your plans for the future?" (This opens the conversation)
Semi-formal (for someone you know reasonably well):
* "Congratulations on graduating! So proud of you and all you've accomplished."
* "Wow, you did it! Congratulations on your graduation. That's a huge accomplishment."
* "Congratulations! I'm so happy for you and excited to see what you do next."
Informal (for close friends and family):
* "You did it! I'm so incredibly proud of you!"
* "Congratulations, grad! Let's celebrate!"
* "I knew you could do it! So proud of everything you've achieved."
Adding a personal touch (any level of formality):
No matter which phrase you choose, consider adding a personal touch to make it more meaningful. For example:
* Mention something specific you admire about their journey: "I was so impressed by your perseverance during [challenging course/project/situation]."
* Refer to a shared memory: "Remember when you were stressed about [specific event]? You made it through, and look at you now!"
* Refer to their future plans (if you know them): "I can't wait to see what you accomplish as you pursue [career/further education]."
Remember to be genuine and enthusiastic! Your sincerity will make your congratulations even more impactful.